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lorasvet [3.4K]
4 years ago
5

Find the exact value of sec 5pi/4.

Mathematics
1 answer:
Papessa [141]4 years ago
3 0

Answer:

-(sqrt2)

Step-by-step explanation:

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A circle that originally had a circumference of 31.4 cm, now has a circumference of 15.7 cm. What happened to the radius? It was
PolarNik [594]

The radius was divided by 2.


31.4 = 2pi * r


31.4/2pi = 15.7/pi


15.7 = 2pi * r


15.7/2pi = 7.85/pi


(7.85/pi) / (15.7/pi) = 1/2

8 0
4 years ago
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The sum of 2 times a number and 11 is -7
Leviafan [203]

Let the x represent the unknown number.

"2 times a number" is 2x

"The sum of 2 times a number and 11" is 2x + 11

"The sum of 2 times a number and 11 is -7" is 2x + 11 = -7

Now we solve the equation for x to find the unknown number.

2x + 11 = -7

Subtract 11 from both sides.

2x = -18

Divide both sides by 2.

x = -9

Answer: The number is -9.

Check: 2 times -9 = -18

-18 + 11 = -7

The answer is correct.


7 0
3 years ago
Please someone help me with this ASAP with the workout!!
astraxan [27]
The answer is 18 cm
Half of 72 is 36
Since YZ is 30, you would subtract 30 from 36 in order to get XY, so you would get 6 for XY
Half of circle W is 24, since it says the diameter of it is 48
So you would subtract XY from half of the diameter of W in order to get WX
It would look like this:
24-6=18
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3 years ago
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PLEASE HELP DUE IN 20!! thank u
viva [34]
-27. But I am not certain, so I am very sorry for mistake if
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2 years ago
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In an isosceles triangle KLM, ∠K is congruent to ∠M and m ∠M=55°. find the m ∠L
Ede4ka [16]

Answer:

70°

Step-by-step explanation:

m ∠L = 180-(55+55)

= 180-110

=70°

6 0
3 years ago
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